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* gpio: move BCM Kona Kconfig optionLinus Walleij2015-04-081-6/+6
| | | | | | | | Move the Kconfig option for the Broadcom BCM Kona up to the commin GPIO controllers, as it is currently grouped under MODULbus expanders which it definately is not. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: arrange SPI Kconfig symbols alphabeticallyLinus Walleij2015-04-081-8/+8
| | | | | | | Rearrange the SPI GPIO expanders in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: arrange PCI GPIO controllers alphabeticallyLinus Walleij2015-04-081-32/+32
| | | | | | | Rearrange PCI GPIO controllers in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: arrange I2C Kconfig symbols alphabeticallyLinus Walleij2015-04-081-45/+45
| | | | | | | Rearrange the I2C GPIO expanders in alphabetic order as already indicated by the comment in the file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: arrange Kconfig symbols alphabeticallyLinus Walleij2015-04-081-145/+145
| | | | | | | | This rearranges the GPIO drivers Kconfig symbols alphabetically as the top comment in the file already states they should be. No functional changes whatsoever. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: ich: Implement get_direction functionAaron Sierra2015-04-081-0/+6
| | | | | | | Allow the kernel to query the driver for a GPIO's pin direction. Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: use (!foo) instead of (foo == NULL)Varka Bhadram2015-04-086-7/+7
| | | | | Signed-off-by: Varka Bhadram <varkab@cdac.in> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: arizona: drop owner assignment from platform_driversVarka Bhadram2015-04-081-1/+0
| | | | | | | | This driver no need to set the owner field, it will be populated by driver core. Signed-off-by: Varka Bhadram <varkab@cdac.in> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: max7300: remove 'ret' variableVarka Bhadram2015-04-081-3/+1
| | | | | Signed-off-by: Varka Bhadram <varkab@cdac.in> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: use devm_kzallocVarka Bhadram2015-04-082-5/+5
| | | | | | | We can use devres API for allocating memory. No need of using kfree. Signed-off-by: Varka Bhadram <varkab@cdac.in> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: sch: use uapi/linux/pci_ids.h directlyMichael S. Tsirkin2015-04-081-1/+1
| | | | | | | | | Header moved from linux/pci_ids.h to uapi/linux/pci_ids.h, use the new header directly so we can drop the wrapper in include/linux/pci_ids.h. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: x-gene: fix devm_ioremap_resource() checkVladimir Zapolskiy2015-04-081-1/+1
| | | | | | | | | devm_ioremap_resource() returns IOMEM_ERR_PTR() and it never returns NULL, fix the check to prevent access to invalid virtual address. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: loongson: Add Loongson-3A/3B GPIO driver supportHuacai Chen2015-04-084-20/+32
| | | | | | | | | | Improve Loongson-2's GPIO driver to support Loongson-3A/3B, and update Loongson-3's default config file. Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Huacai Chen <chenhc@lemote.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* MIPS: Move Loongson GPIO driver to drivers/gpioHuacai Chen2015-04-075-1/+8
| | | | | | | | | Move Loongson-2's GPIO driver to drivers/gpio and add Kconfig options. Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Huacai Chen <chenhc@lemote.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* MIPS: Cleanup Loongson-2F's gpio driverHuacai Chen2015-04-072-64/+31
| | | | | | | | | | This cleanup is prepare to move the driver to drivers/gpio. Custom definitions of gpio_get_value()/gpio_set_value() are dropped. Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Huacai Chen <chenhc@lemote.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: gpio-tb10x: remove incorrect __exit markupDmitry Torokhov2015-03-271-1/+1
| | | | | | | | | | | Even if bus is not hot-pluggable, the devices can be unbound from the driver via sysfs, so we should not be using __exit annotations on remove() methods. The only exception is drivers registered with platform_driver_probe() which specifically disables sysfs bind/unbind attributes. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: omap: get rid of GPIO_INDEX() macroGrygorii Strashko2015-03-271-9/+0
| | | | | | | | | | | | Now OMAP GPIO driver prepared for GPIO_INDEX() macro removing. Do It ;) Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Acked-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: omap: get rid of omap_irq_to_gpio()Grygorii Strashko2015-03-271-12/+5
| | | | | | | | | | | | Now OMAP GPIO driver prepared for omap_irq_to_gpio() removing. Do it ;) Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Acked-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: omap: get rid of GPIO_BIT() macroGrygorii Strashko2015-03-271-1/+0
| | | | | | | | | | | | Now OMAP GPIO driver prepared for GPIO_BIT() macro removing. Do it ;) Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Acked-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: omap: convert gpio irq functions to use GPIO offsetGrygorii Strashko2015-03-271-33/+34
| | | | | | | | | | | | | | | | | | | | | | | Convert GPIO IRQ functions to use GPIO offset instead of system GPIO numbers. This allows to drop unneeded conversations between system GPIO <-> GPIO offset which are done in many places and many times. It is safe to do now because: - gpiolib always passes GPIO offset to GPIO controller - OMAP GPIO driver converted to use IRQ domain, so struct irq_data->hwirq contains GPIO offset This is preparation step before removing: #define GPIO_INDEX(bank, gpio) #define GPIO_BIT(bank, gpio) int omap_irq_to_gpio() Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Acked-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: omap: drop 'gpio' param from omap_gpio_init_irq()Grygorii Strashko2015-03-271-7/+5
| | | | | | | | | | | | The 'gpio' parameter isn't needed any more as it duplicates 'offset' parameter, so drop it. Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Acked-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: omap: convert debounce functions switch to use gpio offsetGrygorii Strashko2015-03-271-7/+7
| | | | | | | | | | | | | | | | | | | | | | Convert debounce functions to use GPIO offset instead of system GPIO numbers. This allows to drop unneeded conversations between system GPIO <-> GPIO offset which are done in many places and many times. It is safe to do now because: - gpiolib always passes GPIO offset to GPIO controller - OMAP GPIO driver converted to use IRQ domain This is preparation step before removing: #define GPIO_INDEX(bank, gpio) #define GPIO_BIT(bank, gpio) int omap_irq_to_gpio() Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Acked-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: omap: simplify omap_set_gpio_dataout_x()Grygorii Strashko2015-03-271-5/+5
| | | | | | | | | | | | | | Both functions omap_set_gpio_dataout_reg() and omap_set_gpio_dataout_mask() accept GPIO offset as 'gpio' input parameter, so rename it to 'offset' and drop usage of GPIO_BIT() macro. Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Acked-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: omap: convert omap_gpio_is_input() to use gpio offsetGrygorii Strashko2015-03-271-6/+4
| | | | | | | | | | | | Convert omap_gpio_is_input() to use GPIO offset instead of mask and, in such way, make code simpler and remove few lines of code. Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Acked-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* altera_gpio_probe() can be statickbuild test robot2015-03-271-1/+1
| | | | | Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Prevent module clock disable when wake-up is enabledGeert Uytterhoeven2015-03-261-2/+31
| | | | | | | | | | | | | When the GPIO module is needed for wake-up, it's module clock must not be disabled. Hence implement irq_chip.irq_set_wake(), which increments/decrements the clock's enable_count when needed, and forwards the wake-up state to the upstream interrupt controller. This fixes wake-up from s2ram using gpio-keys when using a PM Domain to manage the module clock. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Add more register documentationGeert Uytterhoeven2015-03-261-12/+12
| | | | | Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: rcar: Use local variable gpio_chip in gpio_rcar_probe()Geert Uytterhoeven2015-03-261-3/+3
| | | | | | | | The existing variable gpio_chip already points to the gpiochip instance, hence use it everywhere. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio/crystalcove: Add additional GPIO for Panel controlShobhit Kumar2015-03-261-1/+6
| | | | | | | | | | | | | | Export PANEL_EN/DISABLE (offset 0x52) as additional GPIO. Needed by display driver to enable the DSI panel on BYT platform where the Panel EN/Disable control is routed thorugh CRC PMIC CC: Samuel Ortiz <sameo@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: Thierry Reding <thierry.reding@gmail.com> Acked-by: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: dwapb: enable for QuarkAndy Shevchenko2015-03-191-2/+1
| | | | | | | | | | | | | | | | | | The Intel Quark SoC contains the DW GPIO on board. While fixing the build error the commit 1972c97db5b0 (gpio: dwapb: fix compile errors) disables the possibility to build the driver on X86, i.e. Intel Quark. The patch reenables it for Intel Quark as well. Since we have Intel Quark SoC introduced in 4.0-rc1 I would like to make this fix available there as well, though the actual MFD driver [1] is applied only for next version. [1] https://lkml.org/lkml/2015/2/1/217 Fixes: 1972c97db5b0 (gpio: dwapb: fix compile errors) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio / ACPI: Use local variable instead of ACPI_HANDLE()Rafael J. Wysocki2015-03-191-1/+1
| | | | | | | | | | | | In acpi_gpiochip_request_interrupts() the handle local variable already contains the value that we want to pass to acpi_walk_resources(), so it is better to use that variable instead of evaluating ACPI_HANDLE() once more for the same device. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio / ACPI: Avoid unnecessary checks in __gpiod_get_index()Rafael J. Wysocki2015-03-191-7/+9
| | | | | | | | | | | | | | | | | If dev is NULL in __gpiod_get_index() and both ACPI and OF are enabled, it will be checked twice before the code decides to give up with DT/ACPI lookup, so avoid that. Also use the observation that ACPI_COMPANION() is much more efficient than ACPI_HANDLE(), because the latter uses the former and carries out a check and a pointer dereference on top of it, so replace the ACPI_HANDLE() check with an ACPI_COMPANION() one which does not require the additional IS_ENABLED(CONFIG_ACPI) check too. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: move pincontrol calls to <linux/gpio/driver.h>Linus Walleij2015-03-192-48/+48
| | | | | | | | | These functions do not belong in <asm-generic/gpio.h> since the split into separate GPIO headers under <linux/gpio/*>. Move them to <linux/gpio/driver.h> as is apropriate. Acked-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: f7188x: add GPIO support for F71869AAndreas Bofjall2015-03-172-5/+25
| | | | | | | | | | Add support for the GPIOs found on the Fintek SuperI/O chip F71869A, such as the one found on the Jetway JNF99-525 motherboard, to the f7188x gpio driver. Signed-off-by: Andreas Bofjall <andreas@gazonk.org> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: f7188x: add GPIO support for F71869Andreas Bofjall2015-03-172-5/+24
| | | | | | | | | | | Add support for the GPIOs found on the Fintek SuperI/O chip F71869, such as the one found on the Jetway NF96u-525 motherboard, to the f7188x gpio driver. Signed-off-by: Andreas Bofjall <andreas@gazonk.org> Tested-by: Les Schaffer <schaffer@optonline.net> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: f7188x: correct spelling of "Fintek"Andreas Bofjall2015-03-171-1/+1
| | | | | | | | The company is called "Fintek", not "Fintech". Fix it. Signed-off-by: Andreas Bofjall <andreas@gazonk.org> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: fix constconst in devresLinus Walleij2015-03-171-1/+1
| | | | | | | | | | | | | Commit 1feb57a245a4910b03202a814ffc51a900bd4aca "gpio: add parameter to allow the use named gpios" includes a double-consted array. What we want is not const const * but const * const (const pointer to const data). Fix this. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Olliver Schinagl <oliver@schinagl.nl> Cc: Rojhalat Ibrahim <imr@rtschenk.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: omap: irq_shutdown: remove unnecessary call of gpiochip_unlock_as_irqGrygorii Strashko2015-03-091-1/+0
| | | | | | | | | | | | GPIOLib core implemnts irqchip->irq_request/release_resources callbacks internally and these callbacks already contain clalls of gpiochip_lock/unlock_as_irq(). Hence, remove unnecessary call of gpiochip_unlock_as_irq() from omap_gpio_irq_shutdown(). Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* extend documentation for gpiod_set_array() functionsRojhalat Ibrahim2015-03-091-0/+20
| | | | | | | | Extend the documentation for the gpiod_set_array() functions and elaborate a bit on possible use cases. Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: mrvl: documentation: trivial: fix typoJosh Wu2015-03-091-1/+1
| | | | | | | fix typo in the document. Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: pxa: simplify BANK_OFF macro offset calculationRob Herring2015-03-091-2/+1
| | | | | | | | | | | The macro BANK_OFF which calculates the base offset for each GPIO port. The macro is needlessly complex and unreadable. Simplify the calculation to a simple math operation. Signed-off-by: Rob Herring <robh@kernel.org> Cc: linux-gpio@vger.kernel.org Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: dwapb: re-enable GPIO_DWAPB for arm64Kefeng Wang2015-03-091-1/+1
| | | | | | | | Hisilicon arm64 soc uses designWare gpio, re-enable it after commit 1972c97db5b(gpio: dwapb: fix compile errors). Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* drivers/gpio: Altera soft IP GPIO driver device tree bindingTien Hock Loh2015-03-071-0/+43
| | | | | | | Adds a new driver device tree binding for Altera soft GPIO IP Signed-off-by: Tien Hock Loh <thloh@altera.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* drivers/gpio: Altera soft IP GPIO driverTien Hock Loh2015-03-074-0/+391
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds a new driver for Altera soft GPIO IP. The driver is able to do read/write and allows GPIO to be a interrupt controller. Tested on Altera GHRD on interrupt handling and IO. v10: - Updated conflicting device tree parameters - Removed unused headers - Used macro instead of magic numbers for ngpio - Code readability cleanup using ?: and temporal variables - Removed leftover garbage and unnecessary function calls - Checked bgpio_init but unusable because Altera GPIO may not be a multiple of 8 bits v9: - Removed duplicated initialization on set_type using temporals to improve code readability in calling generic_handle_irq - Using ?: ternary to reduce code size v8: - Using for_each_set_bit - Added const for struct definition - Removed naggy pr_err - Sort alpha header - Remove unused macros - Use fixed width data types instead of unsigned long - Whitespace issue fixes - Removed _relaxed function for better compatibility across different CPU - Changed irq_create_mapping to platform_get_irq updated implementation to use gpiochip_irqchip_add - Reserve interrupt-cells number 2 in device tree binding for future use - Remove confusing sections on devicetree bindings - Added tristate Kconfig help text v7: - Used dev_warn instead of pr_warn - Clean up unnecesarry if else indentation v6: - Added irq_startup and irq_shutdown - Changed bitwise clamping style - Cleanup bitwise operation to improve readability change naming of mapped irqs from virq to mapped_irq v5: - Dispose irq_domain mapping correctly - Update optional binding description in binding docs v4: - Added vendor prefix to devicetree binding for IP specific properties using MMIO GPIO helper library instead of manually map PIO to memory - altera_gpio_chip inline struct documentation to kerneldoc - Using dev_ print to print a better failure message v2, v3: - Do not reference NO_IRQ - Updated irq_set_type to only allow the hardware configured irq type Signed-off-by: Tien Hock Loh <thloh@altera.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: vf610: Replaces comma between expression statements by semicolonAxel Lin2015-03-061-8/+8
| | | | | Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpiolib: add devm_gpiod_get_array and devm_gpiod_put_array functionsRojhalat Ibrahim2015-03-053-2/+131
| | | | | | | | | | Add device managed variants of gpiod_get_array() / gpiod_put_array() functions for conveniently obtaining and disposing of an entire array of GPIOs with one function call. Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpiolib: add gpiod_get_array and gpiod_put_array functionsRojhalat Ibrahim2015-03-055-3/+312
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce new functions for conveniently obtaining and disposing of an entire array of GPIOs with one function call. ACPI parts tested by Mika Westerberg, DT parts tested by Rojhalat Ibrahim. Change log: v5: move the ACPI functions to gpiolib-acpi.c v4: - use shorter names for members of struct gpio_descs - rename lut_gpio_count to platform_gpio_count for clarity - add check for successful memory allocation - use ERR_CAST() v3: - rebase on current linux-gpio devel branch - fix ACPI GPIO counting - allow for zero-sized arrays - make the flags argument mandatory for the new functions - clarify documentation v2: change interface Suggested-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Tested-by: Rojhalat Ibrahim <imr@rtschenk.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpiolib: define gpio suffixes globallyRojhalat Ibrahim2015-03-052-8/+9
| | | | | | | | | Avoid multiple identical definitions of the gpio suffix strings by putting them into a global constant array. Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: add parameter to allow the use named gpiosOlliver Schinagl2015-03-044-3/+20
| | | | | | | | | | | | | | The gpio binding document says that new code should always use named gpios. Patch 40b73183 added support to parse a list of gpios from child nodes, but does not make it possible to use named gpios. This patch adds the con_id property and implements it is done in gpiolib.c, where the old-style of using unnamed gpios still works. Signed-off-by: Olliver Schinagl <oliver@schinagl.nl> Acked-by: Bryan Wu <cooloney@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* gpio: pcf857x: Propagate wake-up setting to parent irq controllerGeert Uytterhoeven2015-03-041-3/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | The pcf857x GPIO and interrupt controller uses dummy_irq_chip, which does not implement irq_chip.irq_set_wake() and does not set IRQCHIP_SKIP_SET_WAKE. This causes two s2ram issues if wake-up is enabled for the pcf857x GPIO pins: 1. During resume from s2ram, the following warning is printed: WARNING: CPU: 0 PID: 1046 at kernel/irq/manage.c:537 irq_set_irq_wake+0x9c/0xf8() Unbalanced IRQ 113 wake disable 2. Wake-up through the pcf857x GPIO pins may fail, as the parent interrupt controller may be suspended. Migrate the pcf857x GPIO and interrupt controller from dummy_irq_chip to its own irq_chip. This irq chip implements irq_chip.irq_set_wake() to propagate its wake-up setting to the parent interrupt controller. This fixes wake-up through gpio-keys on sh73a0/kzm9g, where the pcf857x interrupt is cascaded to irq-renesas-intc-irqpin, and the latter must not be suspended when wake-up is enabled. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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